Radeon HD 7970 and Radeon R7 250X - video card comparison
Passmark - benchmark score Radeon HD 7970 vs Radeon R7 250X
Radeon HD 7970
5405
Radeon R7 250X
2336
Radeon HD 7970
Radeon R7 250X
Architecture
GCN (2011−2017)
GCN 1.0 (2012−2020)
GPU code name
Tahiti XT
Cape Verde
Market segment
Desktop
Desktop
Release date
December 2011
February 2014
Bus support
PCIe 2.1 x16
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin + 1x 8-pin
1 x 6-pin
Boost clock speed
925 MHz
1000 MHz
Floating-point performance
3,789 gflops
1,216 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
1,500 million
Pipelines / CUDA cores
2048
640
Power consumption (TDP)
300 Watt
80 Watt
Texture fill rate
118.4
38.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
6 GB
2 GB
Memory bus width
384 Bit
128 Bit
Memory clock speed
1375 MHz
1625 MHz
Memory bandwidth
264 GB/s
96 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
+
1
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
DirectX® 12
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
AppAcceleration
-
-
CrossFire
1
1
DDMA audio
-
+
Enduro
-
-
FreeSync
1
1
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-